PDN: Delivering and supplying enough charge to the load in a timely fashion to avoid too much droop in the load voltage, versus achieving a required impedance target and the capability of capacitors delivering charge beyond their series resonance frequency.

Measuring the characteristic impedance of most PCB transmission lines is straightforward and is usually achieved with a TDR – but it is important to “see” the characteristic impedance free from the impact of the interconnect from the test system, or effects from the end of the line under test.

EDI CON USA 2017, an event that brings together engineers working on high-frequency analog and high-speed digital designs, will take place at the Hynes Convention Center, September 11-13 in Boston, Mass.